Seri · 1 episode

Heisei Rider vs. Showa Rider: Kamen Rider Taisen feat. Super Sentai

The Riders are usually fighting in order to protect their home, but this time around they are fighting each other. It seems like the fighting is connected to the Underground Empire Badan. Kamen Rider 1, Takeshi Hongo, is trying to defeat Badan and in order to do that he must defeat Gaim. Badan are using monsters from different series and are trying to continue where Shocker left off. ToQger and Kyoryuger’s Kyoryu Red will be joining the fight to protect world peace.